"Hillary Eyeing Immigration as Top 2008 Issue"
NewsMax offers a roundup of Hillary being to the "right" of Bush on immigration matters. There's no outright statement from her saying if she ran she'd make it a key part of her campaign, but some of the things she's said - bearing in mind Billary probably polled the type of dog they should get - might make people think she's got that in mind.
Back in July I noted that at the DNC convention she said we need to "secure our borders." My thoughts at the time still stand: the Clintons weren't so good on immigration during their presidency, but that doesn't necessarily rule out her receiving a lot of support if she earnestly (yeah, I know) pledges to do something positive this time around.